252 THE CANADIAN ENTOMOLOGIST 



It has always appeared to me that the adults disappear long before the sum- 

 mer is over, but this may be an error on my part. The chirping of the 

 males becomes more and more infrequent towards the close of July, and 

 apparently disappears before that of abbreviatus begins. None of my 

 female specimens of Gryllus taken after July can be referred to 

 peiinsylvanicus, though some of the males, I confess, I should be unable 

 to place were it not for their dates. 



I have only one long-winged female taken at De Grassi Pt., Lake 

 Simcoe, which has, unfortunately, no date attached. 



Localities Niagara Glen, June 28, 1903 ; Hamilton, June, 1893 ; 

 Toronto, May 23, 1898, June ; Lake Simcoe, June-July 30, 190 1.  



II. Gryllus domesticus, Linnaeus. The House Cricket. 



Gryllus (Acheta) domesticus, Linnaeus, Syst. Nat. I., 1758, 428. 



Gryllus domesticus, Glov., Illust. N. A. Ent., 1872, PI. VL, fig. 14. 



Measurements : Length of pronotum, c? $ 3 mm.; of hind femur, 

 $ 10.5 mm., 9 10 mm.; of body, ^ 20 mm., 9 18 mm.; of ovipositor, 

 1 1 mm. 



Late in the fall of 1903 1 heard the chirp of a cricket in the basement 

 of the Toronto General Hospital, but paid little heed to it, thinking it was 

 that of a common field cricket which had entered the building. My 

 attention was again drawn to the sound, however, as it persisted night 

 after night, and 1 began to notice that it was higher pitched and of less 

 volume than that of the field cricket. I traced the sound to the boiler- 

 room and found, as I had expected, the European house cricket, which I 

 had never before met with in this country. They were there in plenty, 

 lurking in the chinks between the bricks of the wall, and positively 

 swarmed under some loose bricks close to the furnace. They were found 

 in all stages, most of them nearly matured. Imagoes continued to be 

 found throughout the winter, but became scarcer in early spring, and by 

 May had nearly disappeared. 



I took one short-winged female. The rest were all long-winged. 



The house cricket is said to be found also in the Trinity College 

 building. Both this and the General Hospital are comparatively old 

 buildings. 



It has been reported once before from Toronto by Caulfield. (Ann. 

 \l^.\\ Ent. Soc. Ont., XVIII., 1888, 69.) 



